Yes, you can set up the E-PM1 to automatically zoom when you turn the focus ring of native lenses.

If you haven't already, enable the Custom "gears" menu (press Menu button, go to the "wrench" menu, select the Menu Display option with the gears icon next to it and choose "On").

Now go to the gears icon, and select Custom menu "A" labelled AF/MF. Scroll down to MF Assist, select it and choose "On". Voila!

If you plan on using any legacy lenses, I highly recommend changing the record button function to zoom rather than video capture. This is found in Custom menu "B", under Button Function. I use it every time to check focus with my old MF lenses, it's a LOT easier!

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